An index linked gilt may get round this as the principle repaid is proportional to inflation. However the income return is lower and the governments definition of inflation may not be yours so your return is still lower.
You are right. I have been having trouble getting full details on index linked gilts. I have invested in some std gilts and they are doing very well right now. But I would like to get info on the IL category; any ideas where to get the info please?